Datasheet

Data Sheet AD9645
Rev. 0 | Page 17 of 36
0.6
–0.5
1
DNL (LSB)
OUTPUT CODE
–0.4
–0.3
–0.2
–0.1
0
0.4
0.3
0.5
0.2
0.1
1367 2733 4099 5465 6831 8197 9563
10929 12295 13661 15027 16393
10537-073
Figure 38. DNL; f
IN
= 9.7 MHz, f
SAMPLE
= 125 MSPS
900,000
500,000
600,000
700,000
800,000
400,000
300,000
200,000
0
100,
000
N – 5 N – 4
N – 3
N – 2 N – 1 N + 1 N + 2 N + 3 N + 4 N + 5N
NUMBER OF HITS
CODE
1LSB rms
10537-076
Figure 39. Input Referred Noise Histogram; f
SAMPLE
= 125 MSPS
90
0
1 10
PSRR (dB)
FREQUENCY (MHz)
10
20
30
40
50
60
70
80
AVDD
DRVDD
10537-077
Figure 40. PSRR vs. Frequency; f
CLK
= 125 MHz, f
SAMPLE
= 125 MSPS
110
0
10
20
30
40
60
50
70
90
80
100
10 5030 70 90 130110
SNR/SFDR (dBFS/dBc)
SAMPLE RATE (MSPS)
SFDR
SNRFS
10537-074
Figure 41. SNR/SFDR vs. Sample Rate; f
IN
= 9.7 MHz, f
SAMPLE
= 125 MSPS
10537-075
110
0
10
20
30
40
60
50
70
90
80
100
10 5030 70 90 130110
SNR/SFDR (dBFS/dBc)
SAMPLE RATE (MSPS)
SNRFS
SFDR
Figure 42. SNR/SFDR vs. Sample Rate; f
IN
= 70 MHz, f
SAMPLE
= 125 MSPS